/* ============================================
   Oko na skład - Landing Page Styles
   Modern, professional design
   ============================================ */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #4CAF50;
    --color-primary-dark: #388E3C;
    --color-primary-light: #C8E6C9;
    --color-secondary: #2196F3;
    --color-accent: #FF9800;
    
    /* Neutrals */
    --color-text: #1a1a2e;
    --color-text-secondary: #4a4a68;
    --color-text-light: #6b6b8a;
    --color-bg: #ffffff;
    --color-bg-alt: #f8f9fc;
    --color-bg-card: #ffffff;
    --color-border: #e8e8f0;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #4CAF50 0%, #2E7D32 100%);
    --gradient-hero: linear-gradient(180deg, #f0fdf4 0%, #ffffff 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Container */
    --container-max: 1200px;
    --container-padding: 1.5rem;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ============================================
   Language Switcher
   ============================================ */
.language-switcher {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-bg-card);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
}

.lang-btn {
    background: none;
    border: none;
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    color: var(--color-primary);
}

.lang-btn.active {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.lang-divider {
    color: var(--color-border);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    background: var(--gradient-hero);
    padding: var(--spacing-3xl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.hero-content {
    max-width: 560px;
}

.app-icon {
    margin-bottom: var(--spacing-lg);
}

.app-icon svg {
    filter: drop-shadow(0 4px 6px rgba(76, 175, 80, 0.3));
}

.app-title {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

.tagline {
    font-size: var(--font-size-xl);
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: var(--spacing-lg);
}

.description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.7;
}

/* Download Section */
.download-section {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.play-store-badge {
    display: inline-block;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.play-store-badge:hover {
    transform: translateY(-2px);
}

.badge-img {
    height: 60px;
    width: auto;
}

.coming-soon {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    font-style: italic;
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    position: relative;
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #1a1a2e, #2d2d44);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-xl), 0 0 0 1px rgba(255, 255, 255, 0.1);
}

.phone-mockup::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 24px;
    background: #1a1a2e;
    border-radius: 20px;
    z-index: 10;
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    border-radius: 30px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
}

.screen-placeholder {
    opacity: 0.8;
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg);
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    color: var(--color-text);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary-light);
}

.feature-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    border-radius: var(--radius-lg);
    color: var(--color-primary);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ============================================
   Data Source Section
   ============================================ */
.data-source {
    padding: var(--spacing-3xl) 0;
    background: var(--color-bg-alt);
}

.data-source-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    max-width: 800px;
    margin: 0 auto;
    background: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
}

.off-logo {
    flex-shrink: 0;
}

.data-source-text p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.data-source-text p:last-child {
    margin-bottom: 0;
}

.license-note {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    font-style: italic;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--color-text);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: #fff;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

.footer-links h4,
.footer-contact h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #fff;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a,
.footer-contact a {
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-contact a:hover {
    color: var(--color-primary-light);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-xl);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Privacy Page Specific Styles
   ============================================ */
.privacy-page {
    background: var(--color-bg-alt);
}

.privacy-header {
    background: var(--gradient-primary);
    color: #fff;
    padding: var(--spacing-3xl) 0 var(--spacing-2xl);
    text-align: center;
}

.privacy-header h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.back-link {
    display: inline-block;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-sm);
    transition: opacity var(--transition-fast);
}

.back-link:hover {
    opacity: 0.8;
    color: #fff;
}

.last-updated {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
}

.privacy-content {
    padding: var(--spacing-3xl) 0;
}

.privacy-article {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl) var(--spacing-3xl);
    box-shadow: var(--shadow-md);
    max-width: 900px;
    margin: 0 auto;
}

.privacy-section {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid var(--color-border);
}

.privacy-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.privacy-section h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
}

.privacy-section h3 {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-text);
    margin: var(--spacing-lg) 0 var(--spacing-md);
}

.privacy-section p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.privacy-section ul {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-xl);
    color: var(--color-text-secondary);
}

.privacy-section li {
    margin-bottom: var(--spacing-sm);
}

.permissions-table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-lg) 0;
}

.permissions-table th,
.permissions-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

.permissions-table th {
    background: var(--color-bg-alt);
    font-weight: 600;
    color: var(--color-text);
}

.permissions-table td {
    color: var(--color-text-secondary);
}

.contact-info {
    background: var(--color-bg-alt);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-lg);
}

.contact-info p {
    margin-bottom: var(--spacing-sm);
}

.contact-info p:last-child {
    margin-bottom: 0;
}

/* Privacy page footer adjustments */
.privacy-page .footer {
    padding: var(--spacing-xl) 0;
}

.privacy-page .footer-bottom {
    border-top: none;
    padding-top: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.privacy-page .footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
}

.privacy-page .footer-bottom a:hover {
    color: var(--color-primary-light);
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .download-section {
        align-items: center;
    }
    
    .hero-visual {
        order: -1;
    }
    
    .phone-mockup {
        width: 240px;
        height: 480px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
    
    .footer-brand {
        grid-column: span 2;
        text-align: center;
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-4xl: 1.875rem;
        --font-size-3xl: 1.5rem;
    }
    
    .language-switcher {
        top: var(--spacing-md);
        right: var(--spacing-md);
    }
    
    .hero {
        padding: var(--spacing-2xl) 0;
        min-height: auto;
    }
    
    .phone-mockup {
        width: 200px;
        height: 400px;
        border-radius: 30px;
    }
    
    .phone-mockup::before {
        width: 60px;
        height: 20px;
    }
    
    .phone-screen {
        border-radius: 24px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: var(--spacing-lg);
    }
    
    .data-source-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-brand {
        grid-column: auto;
    }
    
    .privacy-article {
        padding: var(--spacing-lg);
        border-radius: var(--radius-lg);
    }
    
    .privacy-page .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: 1rem;
    }
    
    .app-title {
        font-size: var(--font-size-3xl);
    }
    
    .badge-img {
        height: 50px;
    }
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content,
.hero-visual {
    animation: fadeInUp 0.6s ease-out;
}

.hero-visual {
    animation-delay: 0.2s;
}

.feature-card {
    animation: fadeInUp 0.4s ease-out;
    animation-fill-mode: both;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }

/* ============================================
   Utility Classes
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}